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प्रश्न
What do you mean by the term dispersion?
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उत्तर
The splitting or breaking up of the white light into its constituent colours as it passes through a refracting medium such as prism is known as dispersion

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संबंधित प्रश्न
Define the following term in the context of spherical mirrors:- Principal focus
What type of image is formed:
on a cinema screen?
A concave lens produces an image 20 cm from the lens of an object placed 30 cm from the lens. The focal length of the lens is:
(a) 50 cm
(b) 40 cm
(c) 60 cm
(d) 30 cm
Explain the following terms :
Pole, Centre of curvature, Radius of curvature, Principal axis. Show them on separate diagrams for each of the concave and convex mirrors.
A concave mirror forms a virtual image of size twice that of the object placed at a distance 5 cm from it.
Find : (a) the focal length of the mirror (b) position of image
Define the term Principle focus.
An object 10 cm high is placed at a distance of 20 cm in front of a spherical mirror of focal length 25 cm. By scale drawing find the nature, position, and magnification of the image in the following case:
Concave mirror
Complete the following diagrams shown in the following figures by drawing the reflected rays.

Name the type of mirror used in the following situation:
Side/rear-view mirror of a vehicle
Support your answer with reason.
